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docs/ko/docs/advanced/advanced-python-types.md
어떤 이유로 코드에서 `|`를 사용할 수 없다면, 예를 들어 타입 어노테이션이 아니라 `response_model=` 같은 곳이라면, 파이프 문자(`|`) 대신 `typing`의 `Union`을 사용할 수 있습니다. 예를 들어, 어떤 값이 `str` 또는 `None`이 될 수 있다고 선언할 수 있습니다: ```python from typing import Union def say_hi(name: Union[str, None]): print(f"Hi {name}!") ``` `typing`에는 `None`이 될 수 있음을 선언하는 축약형으로 `Optional`도 있습니다. 아주 개인적인 관점에서의 팁입니다: - 🚨 `Optional[SomeType]` 사용은 피하세요
Created: Sun Apr 05 07:19:11 GMT 2026 - Last Modified: Sat Feb 14 08:57:01 GMT 2026 - 2.4K bytes - Click Count (0) -
docs/de/docs/advanced/advanced-python-types.md
Created: Sun Apr 05 07:19:11 GMT 2026 - Last Modified: Sat Feb 14 07:57:30 GMT 2026 - 2.3K bytes - Click Count (0) -
docs/es/docs/advanced/advanced-python-types.md
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docs/en/docs/advanced/advanced-python-types.md
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docs/fr/docs/advanced/advanced-python-types.md
Created: Sun Apr 05 07:19:11 GMT 2026 - Last Modified: Sat Feb 14 08:12:41 GMT 2026 - 2.3K bytes - Click Count (0) -
docs/zh/docs/advanced/advanced-python-types.md
## 使用 `Union` 或 `Optional` { #using-union-or-optional } 如果你的代码因为某些原因不能使用 `|`,例如它不是在类型注解里,而是在 `response_model=` 之类的参数中,那么你可以使用 `typing` 中的 `Union` 来代替竖线(`|`)。 例如,你可以声明某个值可以是 `str` 或 `None`: ```python from typing import Union def say_hi(name: Union[str, None]): print(f"Hi {name}!") ``` `typing` 也提供了一个声明“可能为 `None`”的快捷方式:`Optional`。 从我非常主观的角度给个小建议: - 🚨 避免使用 `Optional[SomeType]`Created: Sun Apr 05 07:19:11 GMT 2026 - Last Modified: Fri Feb 13 13:37:57 GMT 2026 - 2K bytes - Click Count (0) -
docs/zh-hant/docs/advanced/advanced-python-types.md
## 使用 `Union` 或 `Optional` { #using-union-or-optional } 如果你的程式碼因某些原因無法使用 `|`,例如不是在型別註記中,而是在像 `response_model=` 之類的參數位置,那麼你可以用 `typing` 中的 `Union` 來取代豎線(`|`)。 例如,你可以宣告某個值可以是 `str` 或 `None`: ```python from typing import Union def say_hi(name: Union[str, None]): print(f"Hi {name}!") ``` 在 `typing` 中也有用 `Optional` 宣告某個值可以是 `None` 的速記法。 以下是我個人(非常主觀)的建議: * 🚨 避免使用 `Optional[SomeType]`Created: Sun Apr 05 07:19:11 GMT 2026 - Last Modified: Sat Feb 14 08:15:26 GMT 2026 - 1.9K bytes - Click Count (0) -
fastapi/.agents/skills/fastapi/references/dependencies.md
When using dependencies with `yield`, they can have a `scope` that defines when the exit code is run. Use the default scope `"request"` to run the exit code after the response is sent back. ```python from typing import Annotated from fastapi import Depends, FastAPI app = FastAPI() def get_db(): db = DBSession() try: yield db finally: db.close()
Created: Sun Apr 05 07:19:11 GMT 2026 - Last Modified: Sun Mar 01 10:05:57 GMT 2026 - 3.2K bytes - Click Count (0) -
docs/en/docs/tutorial/extra-models.md
It will be defined in OpenAPI with `anyOf`. To do that, use the standard Python type hint [`typing.Union`](https://docs.python.org/3/library/typing.html#typing.Union): /// note
Created: Sun Apr 05 07:19:11 GMT 2026 - Last Modified: Thu Mar 05 18:13:19 GMT 2026 - 6.7K bytes - Click Count (0) -
docs_src/header_params/tutorial002_an_py310.py
from typing import Annotated from fastapi import FastAPI, Header app = FastAPI() @app.get("/items/") async def read_items( strange_header: Annotated[str | None, Header(convert_underscores=False)] = None, ):
Created: Sun Apr 05 07:19:11 GMT 2026 - Last Modified: Tue Mar 26 16:56:53 GMT 2024 - 261 bytes - Click Count (0)